基于改进型SVPWM滞环控制并网逆变器优化研究  

Research on Optimization of Grid-Connected Inverter Based on Improved SVPWM Hysteresis Control

作　　者：郭皓源 王兵[1] 李江坪 李罗 彭诚 GUO Haoyuan;WANG Bing;LI Jiangping;LI Luo;PENG Cheng(College of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412000,China)

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412000

出　　处：《电工技术》2023年第3期61-65,69,共6页Electric Engineering

基　　金：湖南省自然科学基金资助项目(编号2018JJ2093);湖南省教育厅科研基金资助项目(编号21C0446)。

摘　　要：永磁驱动系统采用直流端并网回馈时,针对并网逆变器对瞬态能量回馈时直流母线电压骤升较大,并网电流谐波畸变率高,采用传统双闭环PI控制策略无法获得理想效果。为此结合SVPWM和滞环控制的优点,提出了一种改进型并网逆变器SVPWM滞环控制策略,有效抑制了直流母线泵升电压峰值,降低了并网电流谐波畸变率,仿真验证了控制策略正确性。When the permanent magnet drive system adopts DC end-connected feedback,the DC bus voltage rises sharply when the grid-connected inverter feeds back the transient energy,and the harmonic distortion rate of the grid connected current is high,and the traditional double closed-loop PI control strategy cannot obtain the ideal effct.Therefore,com-bined with the advantages of SVPWM and hysteresis control,an improved grid-connected inverter SVPWM hysteresis cont rol strategy is proposed.This strategy effectively suppresses the peak voltage of the DC bus pump and reduces the harmonic distortion rate of the grid connected current.The simulation verifies the correctness of the control strategy.

关 键 词：并网逆变器 SVPWM滞环控制 直流母线泵升电压 电流谐波畸变率 

分 类 号：TM464[电气工程—电器]